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63 results about "Magnetic vortex" patented technology

Method of Generating Strong Spin Waves and Spin Devices for Ultra-High Speed Information Processing Using Spin Waves

Provided are a method of generating strong spin waves, a method of simultaneously generating spin waves and electromagnetic waves, a logic operation device using spin waves, a variety of spin wave devices employing the same, and a method of controlling phases of spin waves. In the method of generating spin waves, strong spin waves are generated by supplying various shapes of energies to a magnetic material in which a magnetic vortex and magnetic antivortex spin structures exist separately or together. When energies are applied to a patterned magnetic material so that magnetic vortex or magnetic antivortex can be generated, a strong torque is generated in a vortex core so that strong spin waves can be generated from the vortex core. The spin waves generated in this way have large amplitudes, short wavelengths, and high frequencies. In the logic operation device using spin waves and the spin wave devices employing the same, wave factors of frequency, wavelength, amplitude, and phase of a spin wave generated by the method of generating spin waves are controlled and wave characteristics such as reflection, refraction, transmission, tunneling, superposition, interference, and diffraction are used. According to the present invention, logic operation spin wave devices capable of performing ultra-high speed information processing and various shapes of optical devices using waves in optics can be reconstructed using spin waves.
Owner:SEOUL NAT UNIV R&DB FOUND

Magnetic vortex array imaging detection method and detection device for detecting defect of steel plate

The invention discloses a magnetic vortex array imaging detection method and a magnetic vortex array imaging detection device for detecting the defect of a steel plate, wherein the method comprises the following steps: acquiring a characteristic parameter and determining an optimal excitation frequency; exciting a sinusoidal alternating current magnetic field and inducing an alternating vortex current; acquiring an induction alternating magnetic signal near a detected area of the detected steel plate; processing the induction alternating magnetic signal and conducting the first differential transformation operation to obtain a transformed differential signal; judging whether the differential signal is less than the preset threshold, if so, judging that no defect exists, otherwise, judging that the defect exists, and extracting an area signal; inputting the area signal into a constructed neural network model to implement defect reverse inversion to obtain a defect profile parameter; and drawing a defect profile according to the defect profile parameter to realize imaging. The method uses a concentric ring type magnetic vortex array detection array to detect the defect, so that the defect of the steel plate is detected at the high accuracy, the detection accuracy is improved, and the defect imaging effect is improved.
Owner:TSINGHUA UNIV

Ultrafast magnetic recording element and nonvolatile magnetic random access memory using the magnetic recording element

Provided are an ultrafast magnetic recording element and a nonvolatile magnetic random access memory using the same. The magnetic recording element includes a read electrode, a magnetic pinned layer formed on the read electrode, and an insulating layer or a conductive layer formed on the magnetic pinned layer. The magnetic recording element includes a magnetic free layer formed on the insulating layer or the conductive layer, in which a magnetic vortex is formed, and a plurality of drive electrodes applying a current or magnetic field to the magnetic free layer. Alternatively, the magnetic recording element includes a magnetic free layer in which a magnetic vortex is formed, a plurality of drive electrodes applying a current or a magnetic field to the magnetic free layer, and a read line disposed around the magnetic free layer. Herein, a current generated by a voltage induced by the movement of a magnetic vortex core flows through the read line. According to the magnetic recording elements, the magnetic recording element with a simple structure can be realized using a magnetic layer with a magnetic vortex formed, and the magnetic recording element can be accurately driven with low power using a plurality of drive electrodes.
Owner:SEOUL NAT UNIV R&DB FOUND

Strongly magnetic vortex sorter

The invention provides a strongly magnetic vortex sorter, belongs to the technical field of waste recycling mechanical equipment, and solves the problem that in sorting process of the conventional strongly magnetic vortex sorter, a material sometimes scatters onto the ground. The strongly magnetic vortex sorter comprises a pedestal, wherein a feed port and a discharge port are formed on the pedestal; a conveyor belt is connected between a rotating shaft and a rotating roll; a sorting chamber is formed on the pedestal at the discharge port end; a discharging plate for partitioning the sorting chamber into a sorting port 1 and a sorting port 2 is arranged inside the sorting chamber in an inclined way; the inclining direction of the discharging plate is in the tangential direction of the discharge port end of the conveyor belt; a regulating device capable of synchronously regulating the discharging amounts of the sorting port 1 and the sorting port 2 is arranged on the discharging plate near the discharge port end in a sliding way. The strongly magnetic vortex sorter reduces the size of the sorting port 1 as well as increases the size of the sorting port 2; and when a rectangular regulating plate moves downwards in an inclining way by fitting the discharging plate, the size of the sorting port 1 is increased and the size of the sorting port 2 is reduced.
Owner:TAIZHOU WEIBO ENVIRONMENTAL PROTECTION EQUIP TECH

Method for recording of information in magnetic recording element and method for recording of information in magnetic random access memory

ActiveUS20100290281A1Easily and correctly recordedLow powerDigital storageMagnetic vortexStatic random-access memory
Provided are a method for recording information in a magnetic recording element and a method for recording information in a magnetic random access memory. The method for recording information in a magnetic recording element includes preparing the magnetic recording element having a magnetic free layer in which a magnetic vortex is formed. A current or a magnetic field whose direction varies with time is applied to the magnetic free layer to switch a core orientation of a magnetic vortex formed in the magnetic free layer to an upward direction or downward direction from a top surface of the magnetic free layer “0” or “1” is assigned according to the direction of the core orientation of the magnetic vortex formed in the magnetic free layer. According to the method for recording information in a magnetic recording element of the present invention, the core orientation of the magnetic vortex formed in the magnetic free layer of the magnetic recording element can be selectively switched by applying a current or magnetic field whose direction varies with time to the magnetic recording element, so that information can be easily and correctly recorded, lower power is consumed in recording information, and the switching for recording information can be performed very rapidly.
Owner:SEOUL NAT UNIV R&DB FOUND

Disk type translation permanent magnetic stator type permanent magnetic vortex speed regulating device

The invention discloses a disk type translation permanent magnetic stator type permanent magnetic vortex speed regulating device. The device comprises an input shaft and an output shaft in a concentric arrangement. The input shaft is orderly and concentrically provided with a permanent magnet stator and a magnetic rotor along an axial direction. The permanent magnet stator can translate along the axial direction of the input shaft. The output shaft is concentrically provided with a conductor rotor. The permanent magnet stator comprises an outer ring iron core, a radially magnetized permanent magnet ring and an inner ring iron core nested in order. The magnetic rotor comprises inner and outer ring permanent magnet poles which are in a staggered arrangement along a circumferential direction. Both the inner and outer ring permanent magnet poles are in an interval arrangement with corresponding iron poles, and the polarities of the inner and outer ring permanent magnet poles are the opposite. Compared with the prior art, the device of the invention has the advantages that through axially translating the permanent magnet stator, a speed adjustment function is realized, thus a speed regulating mechanism is simplified, the maintenance cost is reduced, the service life is prolonged, the structure is simple, the operation is convenient, the device is suitable for the occasions of different requirements, and the device has the functions of a permanent magnet coupling coupler, a soft starter and a permanent magnet speed regulator.
Owner:SOUTHEAST UNIV

Magnetic sealing device for large-torque magnetic stirrers

The invention discloses a magnetic sealing device for large-torque magnetic stirrers, comprising a drive motor (1). The output shaft of the drive motor (1) is directly and fixedly connected with a magnetic coupling outer magnetic cylinder (2). A magnetic coupling inner magnetic cylinder (3) corresponding to the magnetic coupling outer magnetic cylinder (2) is arranged at the inner side of the magnetic coupling outer magnetic cylinder (2). The magnetic coupling inner magnetic cylinder (3) is directly and fixedly connected with the top end of an input sun wheel (41) of a planetary reducer (4). The input sun wheel (41) and a planetary wheel (42) are meshed with each other, the other side of the planetary wheel (42) and a gear ring (43) are meshed with each other, and the lower end of the gear ring (43) is fixedly connected with the upper end of an output spindle (5). After the torque of the motor is transferred to the magnetic coupling inner magnetic cylinder under the action of a magnetic field, the speed is reduced through the built-in planetary reducer, and thus large-torque transmission is realized. The consumption of magnetic blocks is low, so that the cost is reduced, and the magnetic vortex heat is small. The magnetic sealing device is suitable for promotion and use.
Owner:江苏胜开尔工业技术有限公司

Ground directly-through downhole drilling device integrating water pumping and water draining tests

InactiveCN106761674AAccurate quantification of hydrogeological parametersCalculation data is easy to get and reliableSurveyConstructionsMagnetic vortexEngineering
The invention discloses a ground directly-through downhole drilling device integrating water pumping and water draining tests. The drilling device comprises a water pumping test device, a water draining test device, a ground directly-through downhole drilling hole and a ground integrated receiving device. Reverse-wire water stopping sleeves a, taper water stopping devices, water spray filtering pipes, sand setting solid pipes and reverse-wire water stopping sleeves b are sequentially arranged from the ground to the downhole in the drilling hole. The water spray filtering pipes are located in an aquifer; sand setting sleeves are arranged in the sand setting solid pipes; and a water-level water temperature sensor is mounted in the drilling hole. The water draining test device comprises five flange plates and magnetic vortex flow sensors which are arranged in an underground roadway in a step-by-step variable diameter mode, and a gate valve is mounted between the bottom of the drilling hole and the water draining test device. The needs of the water pumping tests or water draining tests are fully considered, one hole meets dual-use, the disadvantage of general inconvenient construction in downhole is overcome, and ground real-time automatic monitoring of quantized data of the water level and water temperature and the like of the target aquifer is realized.
Owner:CHINA UNIV OF MINING & TECH

Novel cathode lining structure for aluminum electrolysis cell

The invention relates to a novel cathode lining structure for an aluminum electrolysis cell, which is characterized in that: a cathode block support boss is arranged on an impermeable layer; the bottoms of cathode blocks are arranged on the cathode block support boss; gaps through which aluminum liquid can pass up and down are reserved among lateral parts of the adjacent cathode blocks; and aluminum liquid circulating grooves are formed among the upper part of the impermeable layer and the bottoms of the cathode blocks. The peripheries of the cathode blocks can be heated by the aluminum liquid in an electrolytic cell bath during aluminum electrolysis production, so that the electrical resistivity of the cathode blocks is reduced, the contact surface areas for conducting current of the cathode blocks and the aluminum liquid are enlarged, and the density of the current conducted by the aluminum liquid is improved; magnetic vortexes of the aluminum liquid, generated on the bottom of the electrolytic cell bath, play a role in clearing and washing away sediments, and simultaneously the cathode blocks can also play a role in blocking the magnetic vortexes of the aluminum liquid above the bottoms of the cathode blocks, so that horizontal fluctuation between the aluminum liquid and an electrolyte interface is reduced, the effects of reducing electrolytic polar distance and setting low voltage are achieved, and the aim of reducing the power consumption in the production of electrolytic aluminum is fulfilled.
Owner:高德金

Magnetic vortex propulsion engine system for magnetieally levitated vehicle

The invention discloses a magnetic vortex propulsion engine system for a magnetieally levitated vehicle. The magnetic vortex propulsion engine system is characterized by comprising a frame body for being mounted on the magnetieally levitated vehicle, the frame body is provided with a rotatable drive device, and a rotating shaft of the drive device is horizontally arranged; the rotating shaft of the drive device is provided with a permanent magnet mechanism, and the permanent magnet mechanism comprises a permanent magnet bracket and a plurality of permanent magnets which are arranged on the outer side of the permanent magnet bracket in the peripheral direction at intervals; the permanent mechanism can make the permanent magnets to move in the peripheral direction of the permanent magnet bracket under the action of the drive device; the magnetic vortex propulsion engine system further comprises a non magnetic conducting plate which is horizontally and fixedly mounted below the permanent magnet mechanism, and a gap is formed between the non magnetic conducting plate and the corresponding permanent magnet. The magnetic vortex propulsion engine system has the advantages of being low in cost, high in drive efficiency, small in magnetic pollution, capable of being applied to tracked and trackless suspension type transportation vehicles and the like.
Owner:CHONGQING ACADEMY OF SCI & TECH

Quantum mechanics simulation method for magnetic skyrmion lattices and magnetic vortex lattices

The invention relates to the field of computational physics and materials science, and applies quantum theory to simulation of magnetic skyrmion lattices and magnetic vortex lattices. The method comprises the steps that: 1, respective rotations in the Hamiltonian quantity of the magnetic system are quantum mechanics operators; 2, all physical quantities are calculated strictly according to a quantum theory; 3, a self-consistent algorithm is adopted; 4, simulation is performed on gradual reduction to low temperature from high temperature so as to ensure correct convergence of a program; 5, periodic boundary conditions are adopted; 6, a vertical external magnetic field is considered, so that spiral stripes generated by the exchange effect of the DMI and the Heisenberg are changed into skyrmion or vortex lattices; 7, when Heisenberg exchange and DMI effects coexist, the Compass type anisotropy effect is considered, and skyrmion lattices with the opposite neighbor vortex directions are simulated. The defects of micro-magnetism and a Monte-Carlo two-classic method are overcome, so that simulation is very flexible and convenient, and particularly in a quantum scale, a periodic magnetic structure which cannot be calculated by the two-classic method is simulated.
Owner:刘照森

Inner cooling circulation system structure for magnetic pump

InactiveCN106996397AImprove liquidityIncrease medium pressurePump componentsPumpsCavitationMagnetic vortex
The invention provides an inner cooling circulation system structure for a magnetic pump. The inner cooling circulation system structure is characterized by being composed of a liquid inlet hole (A), a liquid inlet hole (B), a liquid inlet hole (C), a liquid outlet hole (D) and a pressure balance back flow hole (E), wherein the liquid inlet hole (A) is formed in a pump cover (2) and leads to a shaft cavity (4) between a left sliding bearing (3a) and a right sliding bearing (3b); the liquid inlet hole (B) is formed in a main shaft (5) and leads to the back end of the main shaft (5); the liquid inlet hole (C) is distributed and radially formed in the back end surface of an inner magnetic rotor (6) and communicates with the liquid inlet hole (B) in the main shaft; the liquid outlet hole (D) is formed in the pump cover (2) and leads to an isolation sleeve inner cavity (70b) on the front side of the inner magnetic rotor (6); the pressure balance back flow hole (E) is formed in an impeller (1); and a medium conducts centrifugal pump effect action when passing the liquid inlet hole (C) in the inner magnetic rotor (6), so that the flowing capacity of the cooling medium is promoted. The inner cooling circulation system structure for the magnetic pump is suitable for conveying easily-cavitated media, prevents the situation that heat of a magnetic vortex returns to an inlet of the impeller and produces steam explosion and cavitation phenomena, improves the anti-cavitation performance of the magnetic pump, and is more suitable for complicated working conditions.
Owner:DANDONG TOP PUMP

Construction waste classification treatment system and process

The invention discloses a construction waste classification treatment system and process. The classified treatment system is characterized by comprising a closed chain plate distributing machine (1),strong feeding plate hammering equipment (3), a first roller screen (4), magnetic vortex sorting equipment (5) and circulating winnowing equipment (6) which are sequentially connected through conveying equipment (2); the circulating winnowing equipment (6) is connected with the packaging equipment (7) and a second roller screen (8) through the conveying equipment (2); the system also comprises dust removing equipment (9) which is connected with the closed chain plate distributing machine (1), the strong feeding plate hammering equipment (3), the first roller screen (4) and the circulating winnowing equipment (6) to remove dust. According to the construction waste treatment system, the processes of crushing, screening, magnetic separation, winnowing, packaging and the like can be effectively carried out on construction waste, recycling of the construction waste is achieved, and particularly dust and the like generated in the production process can be effectively collected through the dust collection system. An environment-friendly, effective and economical construction waste recycling and classifying treatment system is realized.
Owner:HUBEI XINXINLAN ENVIRONMENTAL PROTECTION TECH CO LTD

Magnetically-driven submerged liquid chlorine pump

InactiveCN104847667AReplace earlyEarly fixPump componentsPump controlImpellerMagnetic tension force
The invention provides a magnetically-driven submerged liquid chlorine pump. The pump comprises an electric motor, an outer magnetic cylinder driven by the electric motor, an inner magnetic cylinder in magnetic coupling with the outer magnetic cylinder, a liquid chlorine pump output shaft connected with the inner magnetic cylinder and a bearing support for erecting the liquid chlorine pump output shaft. An impeller is connected with the end, opposite to the inner magnetic cylinder, of the liquid chlorine pump output shaft, and a plurality of layers of distance sleeves are arranged between the inner magnetic cylinder and the outer magnetic cylinder and are fixed to the bearing support through a connecting plate; a gap exists between the adjacent distance sleeves, and closed vacuum space is formed between the adjacent distance sleeves; the connecting plate is fixedly connected with a liquid leakage alarming apparatus communicated with the vacuum space; and the distance sleeves are non-metal distance sleeves. According to the technical scheme, heat generated by the magnetic vortex is avoided; liquid lubricating and cooling are not needed; the phenomenon that media pollute the inner magnetic cylinder and the external environment is completely eradicated; and the service life of the inner magnetic cylinder, the outer magnetic cylinder and the distance sleeves is prolonged.
Owner:陈亚波
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